tintmeter,tintometer
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- optical head controllers,control ics/modules
- upper state relaxation
- Varotal lens
- holographic gratings
- optical harmonic generation
- astrospectrograph camera
- diatomic roto
- intensifying screen
- infra-red beam folower
- metacrystalline
- optical deformation
- geometrical focus
- frequency summing
- push out
- multilongitudianl-mode laser
- visible emissivity
- filters
- time-averaged shadow-moire method
- chronophotography
- mode pattern